This problem can occur if you are using a browser that does
not support ActiveX controls (for example, if you are running Microsoft
Internet Explorer, and you have the security settings set to not run ActiveX
controls).

Netscape Navigator does not support the ActiveX
functionality that embeds Microsoft NetMeeting in the Web page. Because of this
limitation, Netscape Navigator users must manually start NetMeeting to
participate in the conference. Internet Explorer users must also manually start
NetMeeting if the security settings are set to not run ActiveX controls.
The
third-party products that are discussed in this article are manufactured by
companies that are independent of Microsoft. Microsoft makes no warranty,
implied or otherwise, regarding the performance or reliability of these
products.